Jan 02,2021
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  • Clean design - just note the IRF520 has a max gate threshold of 4v - meaning that it is possible for the threshold not to be met until 4v. At threshold the gate is barely open, the specs use 4.5v as min (RDS on). The min Vgs of 2v only means that is it possible for the gate to start opening (passing little current - see fig3 of the datasheet). This doesn't work 100% of the time, but if you want logic level FETs, use IRL (L=logic). IRF are mostly >5v.

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